File: implicit-use-spill.mir

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (22 lines) | stat: -rw-r--r-- 779 bytes parent folder | download | duplicates (28) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
# RUN: llc -run-pass=greedy -mtriple=x86_64-apple-macosx -o - %s | FileCheck %s

# Make sure we don't assert when we try to reload a value that is just implicitly used.
---
# CHECK: name: foo
# This test forces a spill of %0.
name: foo
registers:
  - { id: 0, class: gr64 }
body: |
  bb.0:
  ; CHECK: NOOP implicit-def [[VAL:%[0-9]+]]
  ; VAL should be spilled before csr_noregs, i.e., before we clobber all the registers
  ; CHECK-NEXT: MOV64mr [[SLOT:%stack.[0-9]+]], 1, $noreg, 0, $noreg, [[VAL]]
  ; CHECK-NEXT: NOOP csr_noregs
  ; We need to reload before the (implicit) use.
  ; CHECK-NEXT: [[RELOADED_VAL:%[0-9]+]]:gr64 = MOV64rm [[SLOT]], 1, $noreg, 0, $noreg
  ; CHECK-NEXT: NOOP implicit [[RELOADED_VAL]]
  NOOP implicit-def %0
  NOOP csr_noregs
  NOOP implicit %0
...